Dear colleague, Some time ago we sent you a subroutine for the results of the relativistic thermal bremsstrahlung Gaunt factor. Our paper "RELATIVISTIC THERMAL BREMSSTRAHLUNG GAUNT FACTOR FOR THE INTRACLUSTER PLASMA. II. ANALYTIC FITTING FORMULAE" has been published in ApJ Supplement 128: 125-138, 2000 May. In this work we presented analytic fitting formulae for Z = 1 - 28. We have added the analytic fitting formulae for Z = 29, 30. Here with we are sending you an updated subroutine for Z = 1 - 30. We hope this would be helpful for your research. We would most like to appreciate whatever comment you might have on our work. With my best wishes, Naoki Itoh Naoki Itoh Department of Physics, Sophia University 7 -1, Kioi-cho, Chiyoda-ku, Tokyo 102-8554 Japan Telephone 81 (0)3 3238 3431 Telefax 81 (0)3 3238 3341 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC C C C THERMAL BREMSSTRAHLUNG GAUNT FACTOR ANALYTIC FITTING FORMULA C C C C GF = sum{ T^i * U^j }, { i,j = 0 - 10 }. C C C C This formula is available for -4